static bool evermore_nmea_config(struct gps_device_t *session, int mode)
/* mode = 0 : EverMore default */
/* mode = 1 : gpsd best */
/* mode = 2 : EverMore search, activate PEMT101 message */
{
unsigned char tmp8;
/*@ +charint */
unsigned char evrm_nmeaout_config[] = {
0x8e, /* 0: msg ID, NMEA Message Control */
0xff, /* 1: NMEA sentence bitmask, GGA(0), GLL(1), GSA(2), GSV(3), ... */
0x01, /* 2: nmea checksum no(0), yes(1) */
1, /* 3: GPGGA, interval 0-255s */
0, /* 4: GPGLL, interval 0-255s */
1, /* 5: GPGSA, interval 0-255s */
1, /* 6: GPGSV, interval 0-255s */
1, /* 7: GPRMC, interval 0-255s */
0, /* 8: GPVTG, interval 0-255s */
0, /* 9: PEMT,101, interval 0-255s */
0, 0, 0, 0, 0, 0, /* 10-15: reserved */
};
/*@ -charint */
gpsd_report(LOG_PROG, "evermore_nmea_config(%d)\n", mode);
/*@i1@*/ tmp8 = (mode == 1) ? 5 : 1;
/* NMEA GPGSV, gpsd */
evrm_nmeaout_config[6] = tmp8; /* GPGSV, 1s or 5s */
/*@i1@*/ tmp8 = (mode == 2) ? 1 : 0;
/* NMEA PEMT101 */
evrm_nmeaout_config[9] = tmp8; /* PEMT101, 1s or 0s */
return (evermore_control_send(session, (char *)evrm_nmeaout_config,
sizeof(evrm_nmeaout_config)) != -1);
}
static bool evermore_protocol(struct gps_device_t *session, int protocol)
{
/*@ +charint */
char tmp8;
char evrm_protocol_config[] = {
(char)0x84, /* 0: msg ID, Protocol Configuration */
(char)0x00, /* 1: mode; EverMore binary(0), NMEA(1) */
(char)0x00, /* 2: reserved */
(char)0x00, /* 3: reserved */
};
/*@ -charint */
gpsd_report(LOG_PROG, "evermore_protocol(%d)\n", protocol);
/*@i1@*/ tmp8 = (protocol != 0) ? 1 : 0;
/* NMEA : binary */
evrm_protocol_config[1] = tmp8;
return (evermore_control_send
(session, evrm_protocol_config,
sizeof(evrm_protocol_config)) != -1);
}
static bool evermore_speed(struct gps_device_t *session,
speed_t speed, char parity, int stopbits)
{
/*@ -type @*/
gpsd_log(&session->context->errout, LOG_PROG,
"evermore_speed(%u%c%d)\n", (unsigned int)speed, parity,
stopbits);
/* parity and stopbit switching aren't available on this chip */
if (parity != session->gpsdata.dev.parity
|| stopbits != (int)session->gpsdata.dev.parity) {
return false;
} else {
unsigned char tmp8;
unsigned char msg[] = {
0x89, /* 0: msg ID, Serial Port Configuration */
0x01, /* 1: bit 0 cfg for main serial, bit 1 cfg for DGPS port */
0x00, /* 2: baud rate for main serial; 4800(0), 9600(1), 19200(2), 38400(3) */
0x00, /* 3: baud rate for DGPS serial port; 4800(0), 9600(1), etc */
};
switch (speed) {
case 4800:
tmp8 = 0;
break;
case 9600:
tmp8 = 1;
break;
case 19200:
tmp8 = 2;
break;
case 38400:
tmp8 = 3;
break;
default:
return false;
}
msg[2] = tmp8;
return (evermore_control_send(session, (char *)msg, sizeof(msg)) !=
-1);
}
/*@ +type @*/
}
static bool evermore_rate_switcher(struct gps_device_t *session, double rate)
/* change the sample rate of the GPS */
{
/*@ +charint @*/
unsigned char evrm_rate_config[] = {
0x84, /* 1: msg ID, Operating Mode Configuration */
0x02, /* 2: normal mode with 1PPS */
0x00, /* 3: navigation update rate */
0x00, /* 4: RF/GPSBBP On Time */
};
if (rate < 1 || rate > 10) {
gpsd_report(LOG_ERROR, "valid rate range is 1-10.\n");
return false;
} else {
evrm_rate_config[2] = (unsigned char)trunc(rate);
return (evermore_control_send(session, (char *)evrm_rate_config,
sizeof(evrm_rate_config)) != -1);
}
/*@ -charint @*/
}
